KR960030224A - High speed search control device and method of digital recording / reproducing system - Google Patents

High speed search control device and method of digital recording / reproducing system Download PDF

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Publication number
KR960030224A
KR960030224A KR1019950000806A KR19950000806A KR960030224A KR 960030224 A KR960030224 A KR 960030224A KR 1019950000806 A KR1019950000806 A KR 1019950000806A KR 19950000806 A KR19950000806 A KR 19950000806A KR 960030224 A KR960030224 A KR 960030224A
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KR
South Korea
Prior art keywords
speed
search
signal
drum
capstan
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KR1019950000806A
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Korean (ko)
Inventor
민병훈
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구자홍
Lg 전자주식회사
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Priority to KR1019950000806A priority Critical patent/KR960030224A/en
Publication of KR960030224A publication Critical patent/KR960030224A/en

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  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

본 발명은 디지탈 기록/재생 시스템에 관한 것으로, 특히 디지탈 브이씨알(DVCR) 또는 디지탈 오디오 테이프 레코더(DAT)와 같이 별도의 콘트롤 트랙을 사용하지 않고 회전 헤드의 정보를 이용하여 고속 탐색을 구현하는 시스템에 있어서 고속 탐색시 자동 트랙 탐색(Auto Track Finding : 이하 ATF라 약칭함)신호 주파수의 수를 검출하여 테이프의 선속도를 제어함으로써 정확한 고속 탐색을 구현 하도록 한 디지탈 기록/재생 시스템의 고속 탐색 제어 장치 및 그 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital recording / reproducing system, and more particularly to a system for implementing high-speed searching using information of a rotating head without using a separate control track such as a digital CR or digital audio tape recorder (DAT). High-speed search control device of a digital recording / reproducing system that realizes accurate high-speed search by detecting the number of signal frequencies and controlling the linear speed of the tape at the time of high-speed search in Auto Track Finding (hereinafter abbreviated as ATF). And to a method thereof.

이러한 본 발명의 목적은 재생 증폭기에서 증폭된 재생 고주파로 부터 자동 트랙 검색 주파수의 수를 검출하여 선속도를 제어하도록 캡스턴 모터 속도 제어신호로 마이콤에 인가하여 캡스턴 모터의 속도를 제어함으로써 달성된다.This object of the present invention is achieved by controlling the speed of the capstan motor by applying the capstan motor speed control signal to the microcomputer to detect the number of automatic track search frequencies from the reproduced high frequency amplified by the reproduction amplifier to control the linear speed.

Description

디지탈 기록/재생 시스템의 고속 탐색 제어 장치 및 그 방법High speed search control device and method of digital recording / reproducing system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제8도는 본 발명에 의한 고속 탐색 제어 장치 구성도, 제9도는 제8도의 ATF주파수 검출부 상세 구성도, 제10도는 본 발명에 적용되는 헤드의 배속시 궤적도.8 is a block diagram of a high-speed search control device according to the present invention, FIG. 9 is a detailed block diagram of the ATF frequency detector of FIG. 8, and FIG. 10 is a trajectory diagram of the head speed applied to the present invention.

Claims (5)

재생 증폭기에서 증폭된 재생 고주파로부터 자동 트래킹 검색주파수의 수를 검출하여 선속도를 제어하도록 캡스턴 모터 속도 제어신호로 마이콤에 인가하는 자동 트랙 검색주파수 검출수단을 포함하여 구성된 것을 특징으로 하는 디지탈 기록/재생 시스템의 고속 탐색 제어 장치.And digital track / recording frequency detection means for detecting the number of automatic tracking search frequencies from the reproduction high frequency amplified by the reproduction amplifier and applying to the microcomputer as a capstan motor speed control signal to control the linear speed. High speed navigation control device in the system. 제1항에 있어서, 상기 자동 트랙 검색 주파수 검출수단은 상기 재생된 고주파로부터 제1, 제2파이롯트 신호를 검출하는 제1, 제2파이롯트 신호 검출부와, 상기 제1, 제2파이롯트 신호 검출부에서 각각 얻어지는 파이롯트 신호로부터 포락선을 검파하는 제1, 제2포락선 검파부와, 상기 제1, 제2포락선 검파부에서 각각 얻어지는 신호의 차신호를 증폭시켜 자동 트랙 검색 에러신호로 마이콤에 인가하는 차동증폭부로 구성된 것을 특징으로 하는 디지탈 기록/재생 시스템의 고속 탐색 제어 장치.2. The apparatus of claim 1, wherein the automatic track search frequency detecting means comprises: first and second pilot signal detectors for detecting first and second pilot signals from the reproduced high frequency, and the first and second pilot signal detectors, respectively. The first and second envelope detectors for detecting the envelope from the pilot signal obtained, and the differential amplifier for amplifying the difference signal of the signals obtained from the first and second envelope detectors and applying them to the microcomputer as an automatic track search error signal. And a high-speed search control apparatus for a digital recording / reproducing system. 고속 탐색시 드럼 기준속도와 캡스턴 기준속도와를 설정하고, 재생되는 고주파로부터 데이타 클럭을 추출하여 드럼 속도를 제어하는 드럼속도 제어과정과, 상기 드럼 속도에 따른 드럼 반주기 동안의 정, 역회전 기준 검출신호를 설정하고, 드럼 반주기 동안의 자동 트랙 탐색 주파수 수를 검출하는 자동 트랙 탐색 주파수 검출과정과, 상기 검출한 자동 트랙 탐색 주파수와 상기 드럼 정, 역회전시 드럼 반주기 동안의 기준 검출신호와를 비교하고, 그 결과에 따라 캡스턴 속도를 제어하는 캡스턴 속도 제어과정으로 이루어짐을 특징으로 하는 디지탈 기록/재생 시스템의 고속 탐색 제어 방법.Drum speed control process for setting drum reference speed and capstan reference speed at high speed search, extracting data clock from reproduced high frequency to control drum speed, and detecting forward and reverse rotation reference during drum half cycle according to the drum speed The automatic track search frequency detection process of setting a signal and detecting the number of auto track search frequencies during a drum half cycle, and comparing the detected auto track search frequency with a reference detection signal during the drum half cycle and the drum half cycle at reverse rotation. And a capstan speed control process for controlling the capstan speed according to the result. 제3항에 있어서, 상기 자동 트랙 검색 주파수 검출과정에서 설정된 드럼 반주기 동안의 기준 검출신호는 정회전시 1/n'*n/2이고, 역회전시는 n'*n/2개인 것을 특징으로 하는 디지탈 기록/재생 시스템의 고속 탐색 제어 방법.The reference detection signal for the drum half cycle set in the automatic track search frequency detection process is 1 / n '* n / 2 for forward rotation and n' * n / 2 for reverse rotation. Fast search control method of digital recording / playback system. 제3항에 있어서, 상기 캡스턴 속도 제어과정은 현재의 선속도가 nVt인가를 판단하여 현재의 선속도가 nVt이면 캡스턴 모터의 구동 방향을 판단하는 단계와, 상기 캡스턴 모터 구동 방향이 정방향이면 정회전시 설정된 기준신호와 현재 검출되는 자동 트랙 검색 주파수 수와를 비교하여 그 차에 따라 캡스턴 모터를 가, 감속하는 단계와, 상기 캡스턴 모터 구동 방향이 역방향이면 역회전시 설정된 기준신호와 현재 검출되는 자동 트랙 검색 주파수 수와를 비교하여 그 차에 따라 캡스턴 모터를 가, 감속하는 단계로 이루어짐을 특징으로 하는 디지탈 기록/재생 시스템의 고속 탐색 제어 방법.The method of claim 3, wherein the capstan speed control process determines whether the current linear speed is nVt, and determines the driving direction of the capstan motor when the current linear speed is nVt, and when the capstan motor driving direction is the forward direction, Comparing the set reference signal with the currently detected number of detected auto tracks and accelerating and decelerating the capstan motor according to the difference; and if the capstan motor driving direction is reverse, the set reference signal and the currently detected auto track are reversed. And a step of decelerating and capturing the capstan motor according to the difference by comparing the number of search frequencies with the number of search frequencies. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950000806A 1995-01-19 1995-01-19 High speed search control device and method of digital recording / reproducing system KR960030224A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020006502A (en) * 2001-11-26 2002-01-19 신일식 Magnetic tape search system by high frequency

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020006502A (en) * 2001-11-26 2002-01-19 신일식 Magnetic tape search system by high frequency

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